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Full text of "The Cambridge Natural History"

HAND AND FOOT

537

be insisted upon too strongly, as in some American Monkeys the
face is as little projecting. Still we are now comparing Man with
his undoubtedly nearest relatives the Simiidae. In the lower jaw
the anterior line at the symphysis is an approximately straight
one, that is at right angles to the long axis of the jaw, while Apes
have a more retreating chin. The <e beautiful sigmoid curve
formed by the lumbar and dorsal vertebrae " is more pronounced

Fie. 282.—Foot of Man, Gorilla, and Oang of the same absolute .length, to show the
difference in proportions. The line of a,' indicates the boundary between, the tarsus
and metatarsus ; &'&', that between the latter and the proximal phalanges ; and eV
bounds the ends of the distal phalanges. as, Astragalus ; ea, ealcaneum; sc.
scaphoid. (After Huxley.)
in Man,  but  exists not  only in  the Anthropoids, but in  othei
Apes.1
The fore-limbs are relatively short, the extreme length of the
arm being such that the outstretched hand does not reach th(
knee. The thumb is a large and useful digit in Man, much mor<
so than in the Anthropoids. On the other hand the hallux is nol
opposable. This is, of course, correlated with the upright attitude
as is also the greater relative thickness of that digit, "upon whicl
1 Cunningham, «* Cunningham Memoirs/* No. II. Royal Irish Acad. 1886.